Programme

O.1 -- Oral, VCTP-46

Date: Monday, 4 October 2021

Time: 11:00 - 11:20

On a viable anisotropic power-law k-inflation model

Tuan Q. Do

Phenikaa Institute for Advanced Study, Phenikaa University, Hanoi, Vietnam

We have found an exact anisotropic Bianchi type I solution to a power-law k-inflation model in the presence of unusual supergravity-motivated coupling between scalar and electromagnetic fields as $f^2(\phi)F_{\mu\nu} F^{\mu\nu}$. Furthermore, stability analysis based on the dynamical system method has been performed to indicate that the obtained solution admits stable and attractive hairs during an inflationary phase and therefore violates the cosmic no-hair conjecture. More interestingly, we have shown that the corresponding tensor-to-scalar ratio of this model turns out to be highly consistent with the observational data of the Planck 2018.

Presenter: Do Quoc Tuan